Face-mask.



H. 0. GRAYBILLGE A. c. ERGLBR. 1

PAGE MASK.

' APPLICATION FILED DEG.16, 1912. I 1,077,272 Patented Nov. 4, 1913.

2 SHEETS-SHEET 1.

HL 0. GRAYBILL & A. O. BEGLER.

FACE MASK.

APPLIUATION FILED DEG. 16, 1912.

1 077 272 Patented NOVA, 1913.

2 SHEETS-SHEBT 2.

W/TNE66E s 700 5 70/255 7 cage-L UNITED STATES PATENT onrron. I

HENRY C. GBAYBILL AND ADOLPH C. ERGLEB, OF ALTOONA, PENNSYLVANIA.

FACE-MASK.

Speeification of Letters Patent.

Application filed December 16, 1912.

Patented Nov. 4, 1913.

Serial No. 737,158.

To all whom it may concern:

and efiicient means of protecting the face" and filtering the air beforeit enters the lungs of the wearer. I

Therefore, the object of the present invention is to provide a face maskwhich can be worn with a great degree of comfort, since it providescushioned parts to contact with ample' space in the front of the mask,which is covered by a transparent element, to enable the wearer toeasily see to perform his work. The mask also provides an air chamber infront of the face which is automatically exhausted of its foul contents,and in turn receives a supply of fresh air.

With these and other objectswhich will more readily appear as thedescription of the case proceeds, the invention consists in the novelconstruction, combination, and arrangement ofparts hereinafter morefully described, illustrated, and claimed.

A preferred and practical embodiment of the invention is shown-in theaccompanying drawings, in which Figure 1 is a front elevation of thepresent invention adjusted to the head of a person. Fig. 2 is a sideelevation of the same. Fig. 3 is a vertical section of a modification ofthe invention applied to the face of a person. Fig. 4 is a detailsectional view of the cushion element. Fig. 5 is a detail elevation ofthe outlet valve. Fig. 6 is a sectional view of the exhaust valve.

Referring specifically to the several figures of the drawings, thenumeral 1 designates the body of the "mask which is of a shape thatconforms with the general features of the human face. The said body 1 ispreferably made of aluminum, though other materials may be used withadvantage, and is Be it known that we, HENRY C. GRAYBILL and ADOLPH C.ERGLER, citizens of the United States, residing at Altoona, in theTcounty of Blair and State of Pennsylvania, have invented certain-new anduseful Im- I provements in Face-Masks, of which the fol:

provided around the outer edge thereof with an annular recess 2 whichhas formed in the wall thereof a plurality of openings 3. The frame '1also has suitably located around the outer edges thereof theeyes 4,through which are passed suitable attaching straps 5, which aredesignated to fit over the head of the wearer and hold the mask inplace.

Located within the annular recess 2 is an elastic tube 6 which isprovided with the valve 7 in' order that it may be inflated and therebyform a cushion, which will snugly fit the face of a person using themask and prevent smoke or bad air from entering under the side edges ofthe mask. The said tube 6 is provided with a plurality of resilientprojections 8 which-are provided with a central cavity 9. Theseprojections 8 are adapted to enter the openings 3 in the. wall of-therecess2jand neceive in their central cavity 9 a screw; 11 or equivalentwedging element. The effect of the screw 11 upon being forced in thecavity9 is to press the side the face of the wearer and also provideswalls of the projections into engagement with the walls of the hole 3,thereby holding in place the inflated cushion tube 6. In connection withthe tube 6, it will be observed that there is a felt or equivalentlininglO interposed between the tube and the body to prevent the rubberfrom coming in direct contact with the metal of the body- The front ofthe body portion 1 is pro"- vided. with an opening which extendsapproximately'across the entire front of the upper part thereof, and isfitted with a transparent element 12. This transparent element which maybe of glass or mica is the mouth of the person wearing the mask,

which gives him free access to the fresh air drawn in by inhalation.

Off to one side of the fresh air intake, there is provided .an exhaustopening 19 which is adapted to be covered by the spring-pressed valvehead '20. In order to prevent the valve from coming too far ofi' itsseat on the body 1, there is fitted over the top thereof a cover 21.This valve, of course, only allows air exhausted from the lungs toescape and prevents any foul air from enterin at this point.

In the modification illustrated in Fig. 3, instead of a filter cup suchas is'used in the other application of the invention, the intake opening15 has attached thereto a tube 22 which extends to a suitable source offresh air supply, not shown.

From the foregoing description, the many advantages of the presentinvention will be readily understood without further comment.

We claim:

1. A face mask comprising a body provided with an opening in the frontthereof, and an annular recess having a wall provided with a pluralityof openings, a tube adapted to be inflated and thereby form a cushionlocated in said annular recess, resilient projections provided with acentral cavity, said projections adapted .to enter the openings in thewall of said annular recess, means for entering the cavity of saidprojections and expanding the same into firm engagement with the wallsof the openings in the recess, a fresh'air su ply inlet, an exhaustvalve, and head attac ing means.

2. A face mask comprising a body provided with an opening in the frontthereof, and an annular recess having a wall provided with a pluralityof openings, a tube adapt ed to be inflated and thereby form a cushionlocated in said annular recess, means on said tube for entering thevopenings in the wall of the recess, means for attaching the tube to thebody of the mask, a transparent element fitted to the body and coveringthe opening in the front thereof, means for holding the said element inplace, an air intake member containing a filtering medium associatedwith the body, an exhaust valve comprising a spring pressed valve head,and a cover therefor, and means for securing the mask to the head of thewearer.

In testimony whereof we hereunto aflix our signatures in the presence oftwo witnesses.

HENRY C. GRAYBILL. ADOLPH C. ERGLER.

Witnesses:

ADAM LEAKE, EMORY L. GEOFF.

